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13C NMR Study of Dihydropyrimidinedione and Dihydropyrimidine-2-thione Derivatives

✍ Scribed by K. BERESNEVIČIŪTĖ; Z. BERESNEVIČIUS; G. MIKULSKIENĖ; J. KIHLBERG; J. BRODDEFALK

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
211 KB
Volume
35
Category
Article
ISSN
0749-1581

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✦ Synopsis

The 13C NMR spectral data for 18 dihydropyrimidinediones and their 2-thio analogues are presented. The influence of substituents on the shielding of neighbouring atoms was analysed and the resonances were unambiguously assigned. 13C NMR spectroscopy was shown to be useful for structural determination of dihydropyrimidinediones and thioanalogues and allowed the facile distinction of otherwise similar compounds from the two classes. 1997

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